I don't think that Bitcoin was designed to crash the cost of living, it was created as money and a pro freedom alternative to the fiat system . Through Bitcoin, many millionaires have been made but that does not equate to crashing the price of commodities because that depends on a lot factors and mostly country specific although there is inflation on the rise at the global level. Bitcoin simply offer people a way out of inflation and a better and more efficient monetary system plus a better way to hedge against the inflation in fiat.
I agree. Yet another factor to keep in mind is that despite Bitcoin's adoption has increased, individuals will still be faced with the same practical economic problems, for example, the problem of housing, skyrocketing energy costs, food production concerns, and taxation. Some of these key factors are still affecting cost of living.
Bitcoin can really give people more control over the way they store and transfer value, most especially in areas where our local currencies is rapidly losing their value. That is a good thing, but that should not be seen as a magic solution to the issues of more expensive living conditions, so while bitcoin can really help preserve wealth, but reducing the cost of living still requires economic conditions to improve.